One of the variables most often included in surveys is income. Sometimes the question is phrased "What is your annual income (in thousands of dollars)?" In other surveys, the responded is asked to "Place an X in the circle corresponding to your annual income level," given a number of ranges from which to choose. (a) For the first format (state your income), what is the level of measurement? (nominal, ordinal, interval, or ratio) (b) For the second format (pick one choice for your income range), what is the level of measurement? (nominal, ordinal, interval, or ratio)

What is the level of measurement for:  DEGREE  EDUCATION INCOME

The histogram to the right represents the weights (in pounds) of members of a certain high-school math team. What is the class width? What are the approximate lower and upper class limits of the first class? ... What is the class width? The class width is (Simplify your answer.) What are the approximate lower and upper class limits of the first class? The approximate lower class limit is The approximate upper class limit is (Simplify your answers.) Frequency IL 0- 105 125 145 165 185 205 225 245 Weight (lbs) Q G

Calculate (x-bar) for the data shown, to two decimal places 19.7 10.4 11.8 26.1 27.3 29